Bias Modification is a game designed to enhance happiness through cognitive bias modification (CBM). By utilizing scientific research, the game aims to assist users in shifting their focus from negative to positive information.

Players can enjoy a familiar match-three gameplay style while actively engaging in cognitive bias modification exercises. Additionally, an optional premium upgrade is available via a one-time in-app purchase. This upgrade eliminates ads, allows users to track their progress, and enables longer gameplay sessions.

With features like testing improvements and the ability to view test results (exclusive to the Premium upgrade), Bias Modification provides an interactive way to work on cognitive biases and promote a more positive mindset.